Cpu Not Powers On,but Boots Automatically After 2 Hours Options

[arulprakash]

Hello,
I am new user now,but i saw some solutions that makes me believe and trust on you that i can get 100% satisfaction solution from u.
About my Home PC problem is:
By the past 4 days ,Our PC is not booting when i press the CPU button,no light in CPU button,no fan sound inside CPU,nothing else.
When i kept this machine like this after 2 or 3 hours, when i comeback and see, our Home PC is booting up automatically and opening OS smoothly, there's no inbetween error or anything else, just running smoothly.
But if we shut down and switch ON the CPU after 30 minutes or 1 hour, the above same problem exists as we press the CPU button,it doesn't powers ON...but if we see after 3 hours , our PC is booting up normally without any error screen messages and opening my OS Vista Ultimate and also XP [dual OS]

what might be the problem happening like this always, any SMPS power problem or in motherboard or in memory RAM card, or in Backup UPS or ...what exactly the problem it is happening everytime for us.

Please HELP US that i mostly trust U

our Home PC configuration as below:
Intel MotherBoard DG35EC
Intel Core 2 QUAD Processor Q6600@2.40GHz
2GB RAM
OS - Vista Ultimate 32-bit operating system[service pack 1]-First option
- XP Professional Service Pack 3
Monitor- 19inch LCD Viewsonic VX1940W
DVD writer[internal-serial-ATA]- Samsung SH-S223F
Video and Sound- Inbuilt motherboad
SMPS - 350W
UPS -APC Back-UPS ES 500

This post has been edited by arulprakash: Nov 7 2009, 05:44 AM

[Ironbender]

Hi arulprakash, welcome to SAF

Before searching further, I'd try the following:

1 - <Start/Run> type in chkdsk /r (Enter) --> Schedule to the next reboot, restart and let it perform;

2 - <Start/Run> type in fsc /scannow (Enter) --> You may need (or not) your original Windows disk;

3 - Check out the temperatures in BIOS (System Health);

4 - Pop the left system cover out and check for dust and bubbled capacitors. Also, see if all the coolers seems to be running normally;

5 - If there is a green led on your motherboard, disconnect the main power cable, wait for ten seconds and reconnect it. Your Power Supply may be gone.

Let us know how it goes.

Chris