White square on monitor computer no working

  ICF 15:47 17 Sep 2005

My computer has gone off and all I can get is a white square on the monitor with the hard drive light on all the time.I have tried another power supply but the same happens I have two optical drives but strangely only one will open

My spec:-

Windows XP Service packs 1 & 2
Motherboard - K8N -E DELUXE
CPU - AMD (Newcastle) Athlon 64bit 3000+ 512kb L2 Cache
Heatsink - Gigabyte G power Pro GH-PDU21-MF
PSU - Enermax Active 460Watt PSU EG465AX-VE
3 x 256MB DDR PC3200 crucial ram
Soundcard - Soundblaster Audigy
Liteon 52x32x52 CD-RW DRIVE - LTR-52327S
LG DVD Ram GSA-4081B
Maxtor 6Y080P0 80GB 7200rpm 8mb Cache ATA133
Maxtor 6Y120M0 120GB 7200rpm Serial 8mb Cache Serial ATA 150
Maxtor Diamondmax Plus 9 120Gb 7200rpm USB2 External

  De Marcus™ 15:51 17 Sep 2005

If you can access the bios, try loading the failsafe setting. Try removing ram sticks and stick with one good known one or swapping around. Failing that unplug/remove all unneccesary hardware and try it stripped down to the 'essentials.'

  ICF 15:57 17 Sep 2005

I can't get into the bios but I will do what you say and strip it down to the minimum.

  ICF 16:00 17 Sep 2005

I have put on a new heat sink fan this morning and all has been working fine all day until about 1 hour ago when the white square happened.If the CPU had over heated would it stop you getting into the Bios?

  De Marcus™ 16:02 17 Sep 2005

It would for a while but when it cooled down it should start up, you did fit the heatsink correctly with a thermal paste or pad didn't you?

  De Marcus™ 16:03 17 Sep 2005

On another note, try resetting the bios, normally done by shorting jumpers on the mobo, refer to your manual.

  ICF 16:56 17 Sep 2005

I will check the heatsink but I did use paste.

  ICF 17:26 17 Sep 2005

Reset the Cmos but no different

  wee eddie 00:23 18 Sep 2005

Check for the "No Signal" Code.

The graphics card may be loose after your work on the innards.

Another thought - You did clean off the old paste. Didn't you!

  woodchip 00:25 18 Sep 2005

Have you tried starting in Safe mode??? keep pressing F5 as computer starts up

  ICF 07:20 18 Sep 2005

Yes tried re-seating the graphics card.
I cleaned off the old paste and applied new.
If it was the processor over heating wouldn't it shut down automatically? because it doesn't it just does nothing except sit there with the red hard drive on.

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