Q: KD7-RAID MB Boots OK With CPU Set As XP2600/266 But Not As XP2600/333. CPU Is XP2600/333. Any Sug

Hi All.

I have a KD7-RAID MB and I have just installed an XP2600/333 CPU. With the
Soft-Menu set to 2600/266 the machine boots fine but if I set it to 2600/333
the machine may not boot. I have found that by restarting the machine and
pressing the reset button after a couple of seconds it will boot as
2600/333. This is a bit of a pain as it does not always work and if it fails
more than a couple of times I end up with the default 1250MHz settings.

The CPU is a genuine XP2600/333 and I have a pair of Crucial 512Meg DDR2700
CL2.5 DIMMs installed. The BIOS settings are default (no turbo/enhanced
options selected) and the memory timings are set by SPD, I have tried
booting with just the one DIMM installed but this made no difference. The
last time I saw this type of problem was when I had an OverClocked Duron
running in a KT7 (800 clocked to 1000) but the power up & reset worked
everytime with that one, not so with this one.

Any Ideas??? Kim.
Birmingham. UK.

 

Have you tried slowing the memory setting to CL 3?

 

David

I have altered the CAS to 3 and I still have the reboot problem. However,
the reset trick seems to work more reliably as I have only had to do it once
rather than several times.

As the MB, Memory & CPU are all at their default settings it really should
boot first time with the CAS set to 2.5. There are various driving strength
settings associated with the Memory options and I wondered if increasing
these might improve the situation. But without any guidelines to follow I
have not attempted to adjust these.

Many thanks for the advice. Kim.
Birmingham. UK.

PS I should have said that with CAS set to 2.5 although I have problems
booting the machine once booted it is stable and runs without any problems.