I've got a problem with my monitor/display and I hope it's not a sign of the mobo going bad. My computer all of a sudden decided to freeze up, and upon restart, the monitor won't get a signal, the light stays yellow.
All the other components appear to be running fine including all fans spin and the HDD. There's just no display going to the monitor.
I've tried two monitors on it and two different video cards. I've unplugged and rearranged the RAM, and still nothing is happening.
Also, for some reason, when it starts up, the DVD drive keeps acting like it wants to spin, and just keeps clicking away. I'm completely stumped, and hopefully this isn't a sign of the mobo going bad.
Any help would be great appreciated!
System Configuration: Windows XP
Internet Explorer 6.0
Intel Pentium 4
ASUS P5RD1-V Mobo
4 SATA HDDs
Powercolor ATI X800 vid card
The first thing to rule out is overheating (CPU, motherboard, hard drive or power supply)
then I would check for bad memory (if you have two modules - swap them out for testing)
then I would test with another power supply
only after I have checked ALL of these would I think it was the Motherboard.
I had a really similar problem that I have only just solved.
My PC is still really new only about 2 months old and its a pretty decent rig.
It crashed and totally froze up for ages so I unplugged it and turned it back on again and lo and behold, lol, no power to any peripherals or any monitor output.
Anyway after a few days without it I plucked up the courage to reset the CMOS with a screwdriver and it worked fine, I went into the BIOS like the manual instructed and 'restored optimal settings' and it rebooted with no results so I re-set it again and instead of going to the bios hit F1 for a normal boot and it is fine now UNTIL!
I turn it off =/
And then I need to reset it again so I don't really know how to solve this problem...
Anyone got any ideas?
Thanks a lot :)
I just experienced the same problem with my HP Pavilion desktop this morning, I hadn't used it for a while because I was moving,and last time I used it, it worked fine, but when I plugged it in this morning, power came on, hdd spun, dvd had power, all fans spinning, but no monitor signal or boot up or beeps. It seemed as though the PC wasn't getting enough power to boot.
I thought something might have been knocked loose when it was moved, so I unplugged the hdd cables, video card and power cables to the motherboard quite a few times, checked the ram, though I didn't remove the ram, and took out the battery and then back in again, and I checked for dust but everything seems very clean. After a longwhile of fiddling around with all the connections, Eventually it just started fine for no good reason and went into windows, but then when I tried to restart it it just kept losing power and rebooting at the windows load up, turned it off and it wouldn't boot and no display again, all the time there were no beeps or funny noises. So I pulled one of the ram sticks out completely, started it and away it went, perfect, I tried turning it on an off a few times, and it continued to work well. So then I put the ram back in, and it reads both and it is currently still working fine, even after restarting a number of times. ??!
I can't be 100% sure, but it seems that the ram may have not been contacting properly, although it felt secure and was clipped in properly, others with this problem could try doing the same, and I did use an anti-static strap. It might be that the ram stick was not seated to the motherboard correctly. I thought it was odd as I thought it should have sent a beep code indicating the ram was at fault, but I think that my onboard speaker is not connected, also strange is it went fine with one of the two ram sticks removed, and then after putting it back in they both were reading and I tried turning in on and off again a few times and it seems to be working fine now.
However, I still have a a nagging thought that something other than the ram could have caused it, I am thinking if if one ram wasn't seated properly, it still should have booted up on the other one, as it did when I removed it. If it does the same thing again, I would then assume that the ram or the ram slot on the mb is bad, or the PSU is faulty and not providing enough power. And at the worst, the CPU is faulty or even worse than that the is the motherboard is at fault.
My best guess for now is that the ram was causing an error, and conflicting with the other ram, preventing the PC from booting, after removing it and then reseating it in the same place it removed the error or compatibility issue.
I had the same problem recently where there was no signal to the monitor but everything seemed to be running. I purchased a new video card and was not the problem. I tried the other tricks mentioned here like pulling the power cord and holding the start button, swapping ram but no luck. I finally pulled the battery from the BIOS and viola, it started. Question is; does that mean the battery is getting weak and needs to be changed? I guess if the problem persists I'll try that.
I tried kareem's suggestion unplugged power cord and held down power button for 1 minute and there was a signal again! Thanks so much! I tried holding down power button for 30 seconds but that didn't work.
I have the same problem with my Dell computer "computer all of a sudden decided to freeze up, and upon restart, the monitor won't get a signal, the light stays yellow". And I will try Kareem's way to see if it is working. Thanks !
Yea, well my computer has something of the same issue. my dad was tinkering with it, and when I tried turning it on after the moniter just said no signal'. Im not sure if this helps, but my mouse light doesnt show, nor does my keyboard light, even thought they are both plugged in. ive tried 2 different moniters and 2 different mouses. Im not sure and im really stuck.
today morning when I woke up and turned on my PC ( AMD 3500+ w NVidia 6800GSold sturdy for the last 3 yrs)
the monitor didnt get turned on because of no signal.
i restarted and heard no RAM beep.
took the RAM out of the MOBO turned on again.. heard the beeps - signal that MOBO isnt smoked. so luckily checked this forum on my iPhone.
last nite I had kicked the CPU accidentally and the mouse came loose. So I hastily put it back in the keyboard socket. ( I use USB keyboard so the KeyBoard socket was empty)
Today after the problem. I tried the Pressing power button without the power cord trick but it didnt work
then I remembered that only the KB and mouse have to be plugged in so I removed the USB KB and put the normal one in and found out the mistake with the MOuse socket
so I put them both where they should be and VOILA it worked. im typing from my PC now :) THANKS OP
I experienced same problem months ago. Yes I did the Power Cord thing and some times it worked for me. Also I used safe mode to be able to get video and this I did type by memory since I was not able to see at the time I was booting. What finally solved my situation for ever was to go back to the original driver of the video card (ATI HD4870) by installing it from the safe mode in Windows Vista. Month later I got a later version of the driver, even newer than the first updgrade I had for it. Never had problems back. Also I was always suspicious about Windows update since some times after doing a system recovery the problem was not happening for a while but this is pure speculation.
By the way the future is LINUX. Keep that in mind, that day all of these problems will go away.
hi guys. I had the same prob wid my intel p4 3.7ghz 1gig ram. I tried everyting and was on the verge of givin up. my pc fired up everyting workn but no signal on da monitor and my hdd led stayed on al the time. I thought my mobo was bad. reset da cmos tried different ram, hdd nothing at al. al I did - I changed da jumpers on my hdd n cd-roms. I added da primary master hdd along wid a slave cd rom. n my secondary master cd rom wid a slave hdd.
Had the same problem. Online and all of a sudden the monitor goes black and tells me to check the video cable. Checked cables, all connections, unplugged and reset using the power button NOTHING. Switched out the video card and WHAM problem solved. However my victory was short lived. I changed the video card last night and this morning same thing happened, all of a sudden black screen. I had one more video card which is what I'm using right now. But if the problem is with the mother board then its going to short out this card too. So if anyone knows anything as to what might be causing this please help. I checked all the previous responses and looked for all of the signs of a busted mother board but it looks all good. Any other suggestions?
I suspect that you have set the screen resolution to a value not supported by your monitor. When in safe mode the resolution is set to a safe universal value that works on all monitors. First check your monitor manual for the maximum resolution and refresh rate. Then use safe mode and change your settings to those values.
Hi man im getting desperate I have the exact same problem and I have tried resetting bios with the battery thing ,removing the ram, unplugging the unnecesary stuf ,taking the cpu owt and taking the gfx card owt and to no avail it still wont work...... when I power up all fans spin but the gfx card soes something weird.. the fan keeps reving up and then dow and up and down BUT when I removed the ram to test that other theory the gfx card's fan kept at a normal speed constantly, everything seems to work but still a black screen I have a brand new lcd that says "check siginal cable" but everything is plugd in when I removed the hdd and started no beep, removed the ram no beep this is the second time this year this has hapend and the pc is only 7 months old the first time I sent it in to the place where I bought it and they said the mobo pci-e slot is faulty and the gave me a brand new mobo now today a month later the problem is back with a vengence and I am really fed up plz any help or hints would be grately appreciated
Alot of people have answered this question with alot of good answers to, however, one situation has yet to be cowered, the one I was just in, I had installed everything into a new case and lo and behold, black screen, nothing happend, tried replacing everything, still nothing, then out of curiosity I decided to setup my pc outside of the case, on a filt map just to see what would happen, the computer booted instantly without a glitch. Point to this is, when you install a pc, make sure everything is installed correctly and that there is nothing that can cause a short circuit or otherwise interfeer with the motherboard, if the motherboard is not installed correctly, it wont boot, might be a small thing as 1 mm of metal touching in the wrong spot. So, if its a new build, take everything out, install 1 item at a time carefully and make sure its positioned correctly, if you do that, it will boot unless u have some unfortunate HW defect.
Thanks for all the information here... finally after all the trouble shoooting to my desktop, finally have found out what's the problem. My video card is already not working no wonder it has no display and no signal.
Had almost the same problem. I had to force the shut down holding the power button. Then the comp didnt even boot, just did that high pitched beep continuously. Tried to unplug hard disk/keyboard/mouse/monitor, but still wont boot and made those beeps. So then I removed the RAM, booted, turned it off, replaced the RAM, booted and it was all working fine. Looks like it had something to do with the ram (memory cache flushed?). Anyway, it works fine now.
My spare PC has also come down to this blank boot screen nonsense after a freak freeze that required a reboot, I've stripped the PC down and cleaned all parts and tried the erazer trick on the gold strips on ram and gpu card to no avail. At this time all the devices appear to power up, the fans all spin up and stay on, mobo LED is green, video card led powered, and soft reset and hard power buttons respond as normal. All I get is constant "No signal" message on both monitors I've tried, and no post or signs of it booting. In addition there no error beeps without ram in, it only beeps when GPU is unpowered. So whats the most likely solution? new PSU ?
DDR1 pc3200 (4x1024mb)
P4 Prescott 3ghz
Zalaman Flower CPU cooler (Regreased when cleaned)
Asus P4c800 Deluxe mobo
Asus 6800 AGPx8
Unfortunately I no longer have spare components for this to test with.