Increased voltage stops xp restarting

[gurunaif]

Anyone encountered this? I have a stable system but, if Increase the cpu voltage slightly then xp won't restart. Instead the monitor powers off as usual but, never wakes up. The computer hangs with all drive lights lit up.
Undo the voltage change and all is stable again. This is not due to overheating as the core temp is a healthy 40 celsius.
Motherboard is Gigabyte GA7VA with AMD xp2400+.

Any help really appreciated.

 

[Quetzacoatl]

I had the same problem with the Gigabyte kt400 board (mine had the raid and 5.1 audio though), it seems to be sensitive to any overclocks beyond the stock 1.75 volts, although it can undervolt at stock speed reliably

Instead of Rdram, why not just merge 4 Sdram channels...

 

[gurunaif]

ak that sucks

is there a workaround?

 

[unoc]

Hmmm, it seems that the PSU is unable to sustain the XP boot.
I do Not have this problem with ASUS A7N8X and an Enermax 465 Watt, even at 1.8 Volts for the CPU core . But XP is avid of CPU resources at starting. This cause an high request of current from CPU (I mean a huge CPU job just when the system starts) If the PSU is not well dimensioned, the voltage for memory, drives and PCI bus will drop down as Win XP starts and the system will not boot.


Principle of the highest harassment for engineers says: having two events, one bad and one favorable, with the same probability to occur, it is most probable that the bad event will occur

 

[gurunaif]

Hmmmm all looks fine in motherboard monitor (psu is 350w enermax e365p):

core: 1.69v
+3.3: 3.32v
+5: 4.96v
+12: 12.59v
-12: -84.3v


values should be within tolerances for e365p???