Monitor gets no signal / Computer won't boot [Solved/Closed]

 thxbud -
Hey guys,

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 motherboard going bad.

Any help would be great appreciated!

System Configuration: Windows XP
Internet Explorer 6.0
Intel Pentium 4
Powercolor ATI X800 vid card

31 replies

Registration date
Thursday April 2, 2009
Last seen
July 16, 2009
will test that theory in the morning, cheers
I'm in that territory right now, too.

Yesterday set up new video drivers and had a COH 4 session (couldn't run due to DirectX failure before) that must have been pretty intensive on the rig, but no smoke, stench etc! Had some problems months before, though.

Now, this morning can't get to run the PC. Well, theoretically, there are NO beeps and I can hear the sound of Vista starting up - but DAMN, there is 'no signal' on the monitor, and that's it. Had to go to work early enough, and that makes me double uneasy, being unable to do anything about it now. Guess HD must be OK, monitor OK, MB - mostly OK, if not for all functions. Could it really be that I've fried the video?
ok im having the same problem the other day I decided to remove my AMD sempron 2200+ CPU and try a AMD anthlon, it ddnt work so I switched back to my old one (yes I did replace the thermal paste correcty) and then I ddnt get anything when I powered it up no beep, monitor signal, anything. so I tried holding the button for 2 minutes, nothing. I pulled the CMOS jumper/battery, nothing. I cleaned off the graphics cards golden spokes(radeon 9200 128mb), nothing. I cleaned off the RAMS golden spokes, nothing. I unplugged EVERYTHING then reconnnected it all, nothing. did my motherboard go bad?

AMD Sempron 2200+
Radeon 9200 128mb graphic card
1gb DDR1 Ram (2x 512mb)
CD/RW lite drive
Basic CD Lite Drive
2 hard drives (1 75gb 1 40gb)
ASUS mobo (dont kno what model type)
did you remove the power cord before holding the button and wat kinda pc is it dell hp compaq which one
i did remove the power cord when I did it, and the brand name is not labeled I just kno that its
AMD Sempron 2200+
ASUS (dont kno what model) mobo
im not gonna bother doing that because ive tried my AMD duron and a diffrent AMD Athlon and neither of them worked
I really need help with my problem:

I have my new Intel i7 920 with ASUS P6T V2 Deluxe, ATI HD 4830, I installed Windows Vista 64bit and I have it connected to my Samsung 46" LCD works great unfortunately is acting a little weird. The only way I get it to turn it on is to unplug the power cord from the back and plugged it back in.....if I leave the power cord connected to the power supply my screen will not get signal.....but when I unplug it from the back of the PSU and then plug it back in it works! So weird......I tested my electricity and it is grounded so that's not the problem. What can be causing the problem...? I have it connected with my HDMI cable but I also have tried VGA and it doesn't help. I have tried a regular 19" LCD and it still gives me the same problem....Anyone out there please help......

Note: I switched my Video cards and same problem.....why why!!! The only way for me to use my computer is to manually disconnect the PSU power cord from the back.....I really need someone's wisdom....
> Guayaco36
Hej, ive seen the same problem on my brothers pc.. check if the button cables (off/on button and reset button) and speaker cable are connected in the right way to the mobo.
Hi everyone,

Here's a discription of my problem, my pc shutdown after my niece played on it and pressed the power button from my keyboard. Upon starting it says Select the proper boot device or insert a bootable cd and restart (cant remember the exact phrase). I went to CMOS and found no detection from any drive( no HD, no CdROM).After testing, I saw that it was the secondary IDE slot from mobo that was defective, so I transferred it to the primary slot. I did a reformat on the whole thing but in crashes. I changed hardisk 160gd ide Seagate (old one is 80gb ide Samsung).

When I turned it on, I pressed DEL for the setup. It freezes on "Entering Setup" I wait for an hour but still no luck. I forced shutdown the system then I encountered this No Signal on Monitor and keyboard thing. I tried mr. bishops suggestion to hold down the power button without any device attached(no monitor, no keyboard, no power, no cdrom, no HD) It works for the first boot up with all the devices attached except the cdrom and hd. But when I tried to restart again, same issue, no signal on monitor and keyboard. Hold the power button again. and it works again, but when I entered CMOS, it freezees on ENTERING Setup still.

Any help? Or is it nothing I can do but to change mobo?
You should unplug everything- the HDs, the CDROM drive, memory chips, new video cards, external fans (I once got a shorted case fan that wouldn't even let the computer boot), all peripherals, then see if you can go into the CMOS. If you can get in with a "virgin" state MB, then start repluging them all in one by one until the problem recurs.

If it still hangs, then make sure it isn't your power brick that is beginning to fail.

Also, I once encountered a PC that would hang in the first 5 minutes due to a hot CPU chip. What threw me off there was that the CPU fan was working, but the culprit was that the maker did not put enough conduction goop under the fan to transfer the thermal heat, so the CPU chip would quickly become too hot to function.

> alborg
thanks for your reply, I have just resolved the issue through the help of some geek friends.

I reset the BIOS, took out the battery from mobo then use the jumpers to reset the BIOS for about 30 minutes. When I pulled back everything, it went ok so I proceed with the OS and driver installation. Before I put back the case, I inserted another 256mb of RAM, same thing happened, no signal on monitor and keyboard.

I took out the RAM again then everything's fine up to now.

Hope it will help our friends as well.
hey all I need help
This problem started two day ago ,I have m925alu v7.3 p4 2.55gHz, 512mb ram ,120gb seagate hdd,
sis_315e graphic card AGP , some pci modem,power supply 300w
My computer powers up you can hear the fans ,dvd drive , cd drive ,(processor heat up), all leds and no sound, but I think its the power supply be cause its makes more noise than normal .
I disconect all pci, AGP card,hdd,cdd,dvd drive floppy and try to do basic boot with the mobo only through mobo
integrated grahics , but to no avail
Going to check the power supply or ram (maybe my mobo is dead)
its because your refresh rate is to too high. reboot into safe mode. right click desktop and go to appearance and change your refresh rate to something lower than what its at. for example it may be at 96htz go lower and reboot normaly.
I had same problem. Blue Screen came on while I was gaming. It read dumping files Error. Problem may have been with recent Downloaded file. Restart PC. I immediate rebooted. Then bam nothing. My Acer screen said no signal and Windows wouldn't even boot up. I built my pc last year and it crashed on me just a couple of months ago. I had a bad Hard drive which corrupted the boot up screen. So I am really Leary about what I download these days on the internet. Anyway I rebooted several times without any luck, Then I unplugged everything to my pc Monitor, key pad , keyboard, Mouse , Power Cable. Decided to look into my pc I have a Master Stacker Case, If you know what they look like they are very accessible. I have 7 fans cooling my system down which I keep clean at least once a month religiously. I checked all cables and found one that was crimped a little and make sure all wires and cables were connected properly. Then I said what the heck I might as well as dust my MO and fans out while I am here. I Connected all cables back and power supplies and it booted up immediately. My true guess would be my CPU fan was overheating my chip or latest download Corrupted something in my pc. I uninstalled the program which I thought was corrupting my PC, I backed up my files just in case and Have NOT had any problems since then. I recommend if your going to buy a hard drive buy one with a five year warranty on it, Like Western Digital raptors. lol....
could be your monitor has blown, or the vga adaptor ( graphix card ) I had same problem just bought a new a treat now
hello I have a acer dualcore model. but it doesn't properly. monitor no signal and processor work slowly keyboard not work. some times work normaly then stoped a error message that is boot the me.

I have had my LCD for about 2.5 years now. I was using it with a DVI connection and recently it stopped working when I boot up the computer. The light on the monitor just keeps flashing and nothing ever displays. I switched to VGA (analog) and it worked, but the next day, the same thing started to happen. I decided to test it on my brother's CPU, and his old 15 inch HP CRT monitor on my CPU. Lo and behold his monitor works on my CPU, and my LCD works on his computer. What is the problem and how can I fix it? Thank you.

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