Blank Screen after CPU upgrade on K7s5a

Try setting all your memory timing to less agressive..
Try clearing your CMOS with the jumper while the unit is unplugged.
If I experiment with setting my memory timings to more agressive settings, I
sometimes have to remove my slower memory stick to even get into the BIOS to
change the timings back. (Blank screen until I remove the slower memory
stick. This prevents getting into the BIOS or anything else.) I suppose I
could've 'cleared' the CMOS and accomplished the same thing.
I have read that pressing the PageUp key during the attempted boot up will
set a default setting for the cpu setting.


"Wayne Mery" wrote in message

 > K7s5a (specs below) running clean for 2 years now with 1600+
 > processor.
 >
 > Disconnect power
 > Installed 2400+ processor.
 > reconnect power
 > Power on
 > blank screen, all fans on, all disks spun up ok, disk light stuck on
 > solid
 >
 > disconnect powre from all drives except boot drive, no satisfaction,
 > floppy doesn't attempt boot
 >
 > OK, back out to the 1600+ processor
 > same results
 >
 > board and capacitors surrounding CPU looks OK
 >
 > suggestions please!
 > Thanks
 > Wayne
 >
 > SPECS:
 > PowerSup Enlight HPC-300-101
 > BIOS settings ULTRA CAS 2.T RAS ACT 7T Precharge 3T
 > CPU 133/133
 > 2100 DDR Crucial memory
 > Upgrading CPU, but first rebooted a couple times to be sure boots
 > fine.
 >> Stay informed about: Blank Screen after CPU upgrade on K7s5a 

"Psychik" wrote in message ...

 >
  > > OK, back out to the 1600+ processor
  > > same results
  > >
  > > board and capacitors surrounding CPU looks OK
 >
 > and probably everything is ok, but You shoud reset CMOS (look into
 > manual how to do it
 > my ECS's works so strange like this, but cmos reseting rebuild
 > everything
 >
 > psychik

Attempted this, but no joy. Also disconnected most devices, and
swapped memory.

Should I be able to disconnect *EVERY* device from the MOBO, except
video, and get a boot/BIOS screen?

What are other likely causes?
And how can I determine if board is toasted?

TIA
Wayne
 >> Stay informed about: Blank Screen after CPU upgrade on K7s5a 

"Wayne Mery" wrote in message

 > K7s5a (specs below) running clean for 2 years now with 1600+
 > processor.
 >
 > Disconnect power
 > Installed 2400+ processor.
 > reconnect power
 > Power on
 > blank screen, all fans on, all disks spun up ok, disk light stuck on
 > solid
 >
 > disconnect powre from all drives except boot drive, no satisfaction,
 > floppy doesn't attempt boot
 >
 > OK, back out to the 1600+ processor
 > same results
 >
 > board and capacitors surrounding CPU looks OK
 >
 > suggestions please!
 > Thanks
 > Wayne
 >
 > SPECS:
 > PowerSup Enlight HPC-300-101
 > BIOS settings ULTRA CAS 2.T RAS ACT 7T Precharge 3T
 > CPU 133/133
 > 2100 DDR Crucial memory
 > Upgrading CPU, but first rebooted a couple times to be sure boots
 > fine.

Sounds like the problem I had last night. Mobo was grounding out against
the case. Try removing it from the case and see if you can get it to boot
that way.

Tannish
 >> Stay informed about: Blank Screen after CPU upgrade on K7s5a 

Wayne Mery wrote:

 >

  >>
   >>>OK, back out to the 1600+ processor
   >>>same results
   >>>
   >>>board and capacitors surrounding CPU looks OK
  >>
  >> and probably everything is ok, but You shoud reset CMOS (look into
  >>manual how to do it
  >> my ECS's works so strange like this, but cmos reseting rebuild
  >>everything
  >>
  >>psychik
 >
 >
 > Attempted this, but no joy. Also disconnected most devices, and
 > swapped memory.
 >
 > Should I be able to disconnect *EVERY* device from the MOBO, except
 > video, and get a boot/BIOS screen?
 >
 > What are other likely causes?
 > And how can I determine if board is toasted?
 >
 > TIA
 > Wayne

You need only MB, Processor (with Heatsink & Fan), Memory, Video,
Keyboard and Power. It's also nice to have the Front Panel Speaker
connected so you can hear error beep codes. If you set this up outside
the case, so you're sure nothing is shorting, you rule out all sorts
of possible problems. If this doesn't work, you have a limited number
of things to try to diagnose.
 >> Stay informed about: Blank Screen after CPU upgrade on K7s5a