For BIOS-->Press Del key or F2 or F12 based on your motherboard model, immediately after starting up of your pc.
For Safe mode--> Press F8 key,immediately after starting up of your pc.
Do the above steps one at a time, if you able to enter into bios then check whether you have Hard disk as first booting device.
If it is ok then restart your pc again and try to enter into safe mode.
Remove any external device that connect to it.. Just force shut down it. Press power button until your pc switch off and then try to switch it on again.
There may be problem lies with your CMOS battery, which is faulty or may be loose.
Did you able to remove it and reseat it again? If you are not then i will provide some procedure to do it.
Battery is allryt i just replaced but still it shows cmos date and time error.. But when the pc is just open i tried pressing all the buttons of keyboard finally i reached a boot screen bios setting i changed the boot setting to 1st boot as cd/dvd again when i restarted it got stuck at tht c
Screen again !!! Is it possible tht my processor is damaged of something!!!
Thanks for ur help!!!
If the problem persists this may be due to the fact that the battery powering the CMOS (when the computer is shut down it allows the CMOS to store information), is depleted.
The CMOS battery is a small pin found on the motherboard; you can refer to the manual provided with your motherboard to change it or have the nearby computer technician change it for you if you don't want to risk any damage.
More information with: Replacing the battery of your motherboard (CMOS battery)
I'm havin the same prob , I've alrd changed the cmos batt and checked ram and cables etc . Alrd cleaned the dusts on the fan , fan is workin and everyth . When I turn on , it just freeze at the Acer logo . Btw It's an Acer windows 8 desktop . Any help would be appreciated , thanks !
I am log off now and catch you tomorrow or later.
Regards
Did you able to remove it and reseat it again? If you are not then i will provide some procedure to do it.
Screen again !!! Is it possible tht my processor is damaged of something!!!
Thanks for ur help!!!