boot failure

  philbolton 14:06 13 Jun 2009

My system is self built, about six months old, and upto now has worked OK.

It comprises:-
Asus P5Q deluxe motherboard
Intel Core 2 E8500 Skt 775
Saphire Radeon HD 4850
Soundblaster XiFi soundcard
BeQuiet 650W power supply
Vista 64 Home Premium

The problem - will not boot.
Press the start button and all the fans start, hard disk spins up, but nothing else happens
The only way I can boot it is to quickly switch the power off and on again, then it boots.

I have:-
Done a repair install of Vista, no change.
Updated the Bios, no change (but more below)
Unplugged and re-installed all boards checking connections and leaving non-essential items not connected, no change
removed the cmos battery to reset, no change

Since the BIOS update I now get a message "F1 to recover BIOS settings or F2 to load defaults"
If I press F1 to change the BIOS, I cannot save the changes, because when I "save and exit" it powers down.
If I "F2" to load defaults, it boots and loads Windows OK

Finally, today, in desperation, I installed Windows Service Pack 2, no change

Any help, suggestions, will be gratefully received.

Phil Bolton

  Fruit Bat /\0/\ 14:26 13 Jun 2009

1. change the CMOS battery

2. Sounds as if the PSU is failing

  philbolton 16:18 13 Jun 2009

Fruit Bat - thankyou.

Just been out and bought a battery and put it in - no change.

Any utility that checks power supplies?
I know the best way is substitution, but I don't have a compatible unit.


  Fruit Bat /\0/\ 17:25 13 Jun 2009

click here

PSUs really need to be loaded for a proper test.

substitution is really the best way if you have another machine you can borrow one from.

This thread is now locked and can not be replied to.

Elsewhere on IDG sites

iMac Pro review

Illustrator Charles Williams on how to create magazines and book covers

iMac Pro review

Les meilleures prises CPL (2018)