I have a big problem since 2 months: my videocard is sometimes working and sometimes not under WinXPSP2.
My system (NO overclocked at all!!!):
Asus A8N-E BIOS: 1.08 & 1.06, chipset driver: 6.65 & 6.66 winxp driver
Leadtek PX6600GT videocard, + 77.77 & 78.01 xp driver (nvidia & leadtek)
AMD Athlon 64 3GHz, Venice
2db sata Samsung
1 ide dvdrw
1GB ram
Philips PSC703 soundcard
400W psu: Chieftec GPS400-AA-101A
Samsung TFT monitor, Analog connection
+ TV with S-Video kabel
WinXPSP2 + all the security updates
Strange: the problem arises during the boot process !!! If it logons in windows the it works 'till the end of time'

(no freezing, no problem at all). So it seem to me, that the problem is initializing the videocard driver !
If it doesn't work, there's 3 ways, sometimes:
- at boot time I can see the Winxp logo, but then no picture at all -> monitor goes stand by
- it logons into winxp, but my videocard driver will be 'VGAsave'
- the newest: there is the videocard in the device manager, and it says 'working fine', but on the 'Display properties' says: 'Default display - ' : no videocard driver
I have tried, but nothing worked:
- I removed all the not neccessary devices from the case (soundcard, hdd, dvdrw, etc)
- I had a Codegen 400W PSU, and some said perhaps it's the cause -> I switched to Chieftec
- virus-checking, spam-checking my whole pc
Strange: there was the first whole month when this config runs fine !!! Then the rest is a nightmare
What else to try? Anybody has such a problem ?
Thanks (and sorry for my bad english)