I recently upgraded my heat sink to a Cooler Master Hyper 212 plus.
For some reason now when I power on the machine; I have to clear the
cmos jumper and put it back in order to get the machine to post. If I
don't clear the CMOS jumper; all the HDs, CDROM , fans move, except for
the video card fan. The LED stays blank with no beeps / video on the
monitor. When I get the machine to post ( after clearing the cmos
jumper) All the components work except I get a CMOS Checksum error ( loading defaults ).
Despite having the checksum error, I can still boot into windows 7 and everything runs great. Here's what I've tried so far to fix the CMOS Checksum
error...
I've tried using the minimum components to potentially rule out what was the problem. IE MB, 1 gig ram, X800 videocard, Heat sink & cpu, psu.
-checked all the capacitors. I didn't see anything abnormally bent or leaking.
-I replaced the battery with a Duracell 3volt medical battery
-Tried a different power supply which made no difference (Old PSU Silverstone 600W with a Silverstone 750W)
-Reseated the heat sink and processor
-Checked both RAM sticks with memory test (both passed with 0 errors)
-Both 2gigs ram sticks work in the slots
-Tried a different video card (ATI x800XL)
SPECS copied from Everest
Motherboard:
CPU Type DualCore AMD Athlon 64 X2, 2000 MHz (10 x 200) 3800+ (AMD 64 X2 4200+)
Motherboard Name Foxconn C51XEM2AA-8EKRS2H (2 PCI, 1 PCI-E x1, 1
PCI-E x4, 2 PCI-E x16, 4 DDR2 DIMM, Audio, Dual Gigabit LAN,
IEEE-1394)
Motherboard Chipset nVIDIA nForce 590 SLI, AMD Hammer
System Memory 2048 MB (DDR2-800 DDR2 SDRAM)
DIMM1: Corsair XMS2 CM2X1024-6400C4 1 GB DDR2-800 DDR2 SDRAM
(5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz)
DIMM3: Corsair XMS2 CM2X1024-6400C4 1 GB DDR2-800 DDR2 SDRAM
(5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz)
BIOS Type Award (05/24/06)
Communication Port Communications Port (COM1)
Display:
Video Adapter NVIDIA GeForce GTX 260 (896 MB)
Video Adapter NVIDIA GeForce GTX 260 (896 MB)
3D Accelerator nVIDIA GeForce GTX 260
Monitor HP w2338h [23" LCD] (CNC91508RR)
Multimedia:
Audio Adapter Creative SB X-Fi XtremeMusic/Platinum Sound Card
BIOS Properties:
Vendor Phoenix Technologies, LTD
Version 6.00 PG
Release Date 05/24/2006
For some reason now when I power on the machine; I have to clear the
cmos jumper and put it back in order to get the machine to post. If I
don't clear the CMOS jumper; all the HDs, CDROM , fans move, except for
the video card fan. The LED stays blank with no beeps / video on the
monitor. When I get the machine to post ( after clearing the cmos
jumper) All the components work except I get a CMOS Checksum error ( loading defaults ).
Despite having the checksum error, I can still boot into windows 7 and everything runs great. Here's what I've tried so far to fix the CMOS Checksum
error...
I've tried using the minimum components to potentially rule out what was the problem. IE MB, 1 gig ram, X800 videocard, Heat sink & cpu, psu.
-checked all the capacitors. I didn't see anything abnormally bent or leaking.
-I replaced the battery with a Duracell 3volt medical battery
-Tried a different power supply which made no difference (Old PSU Silverstone 600W with a Silverstone 750W)
-Reseated the heat sink and processor
-Checked both RAM sticks with memory test (both passed with 0 errors)
-Both 2gigs ram sticks work in the slots
-Tried a different video card (ATI x800XL)
SPECS copied from Everest
Motherboard:
CPU Type DualCore AMD Athlon 64 X2, 2000 MHz (10 x 200) 3800+ (AMD 64 X2 4200+)
Motherboard Name Foxconn C51XEM2AA-8EKRS2H (2 PCI, 1 PCI-E x1, 1
PCI-E x4, 2 PCI-E x16, 4 DDR2 DIMM, Audio, Dual Gigabit LAN,
IEEE-1394)
Motherboard Chipset nVIDIA nForce 590 SLI, AMD Hammer
System Memory 2048 MB (DDR2-800 DDR2 SDRAM)
DIMM1: Corsair XMS2 CM2X1024-6400C4 1 GB DDR2-800 DDR2 SDRAM
(5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz)
DIMM3: Corsair XMS2 CM2X1024-6400C4 1 GB DDR2-800 DDR2 SDRAM
(5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz)
BIOS Type Award (05/24/06)
Communication Port Communications Port (COM1)
Display:
Video Adapter NVIDIA GeForce GTX 260 (896 MB)
Video Adapter NVIDIA GeForce GTX 260 (896 MB)
3D Accelerator nVIDIA GeForce GTX 260
Monitor HP w2338h [23" LCD] (CNC91508RR)
Multimedia:
Audio Adapter Creative SB X-Fi XtremeMusic/Platinum Sound Card
BIOS Properties:
Vendor Phoenix Technologies, LTD
Version 6.00 PG
Release Date 05/24/2006
