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Please Help-Switched CPU's, No Post

post #1 of 3
Thread Starter 
I have a problem that's driving me nuts. Just built a new system Asus P4C800Deluxe with a Prescott 3.4 DO Stepping, Twin Corsair 10243200C2PT.
When I first booted up, I couldn't post because my Bios was too old to support the processor. So I installed from my other computer my working 3.2 Northwood, booted up, updated the Bios to the version that supports the newer Prescotts, installed XP, all drivers, video drivers, etc. Everything worked great. Now it gets strange. I installed the 3.4 Prescott, I cleared my CMOS, and I get no post. I didn't touch any connections, no static discharges, etc. I can't figure out the problem, it's a new CPU. So I reinstall my 3.2 Northwood, clear the CMOS again, and guess what? NO post, exactly the same as the last attempted bootup. I'm stumped, how could my original setup not boot back up? Has anyone ever had a problem like this, what do I do? Thanks
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
P4 3.4E Ghz Prescott-G1 Stepping Asus P4C800E-Deluxe Radeon 9700 Pro OCZ EB DDR PC-4000 2x1024MB Platinum Edition 
Hard DrivePowerCase
Western Digital 120 G Thermaltake 420W Thermaltake Xaser II 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
P4 3.4E Ghz Prescott-G1 Stepping Asus P4C800E-Deluxe Radeon 9700 Pro OCZ EB DDR PC-4000 2x1024MB Platinum Edition 
Hard DrivePowerCase
Western Digital 120 G Thermaltake 420W Thermaltake Xaser II 
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Reply
post #2 of 3
How exactly are you clearing CMOS? If you haven't already done so, try doing a more thorough clear (unplug/switch off PSU, remove battery, move jumper, wait a fair amount of time, and redo everything). A D0 stepping Prescott is not exactly new tech (not knocking your system, simply stating there were later Prescott revisions), so that board should have no problems at all with the CPU.

I would also try stripping down the system and rebuinding it in case there are any issues with loose connectors, a random screw touching something it shouldn't, etc. It's sometimes difficult to do a thorough job checking all of the little things without starting from scratch, and it's almost always something annoying small that keeps things from working properly.
Sig rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Q6600 G0 23A Asus P5K Deluxe Wifi HD 3870 2x2 GB G.Skill DDR2-800 
Hard DriveOptical DriveOSMonitor
2x250 GB Seagate RAID 0 + 320 GB Seagate Samsung SATA DVD Windows XP Pro/Vista Ultimate 64 bit Viewsonic VA2012wb 
KeyboardPowerCaseMouse
Saitek Eclipse Corsair HX620 Lian Li V2000b Logitech G7 
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Sig rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Q6600 G0 23A Asus P5K Deluxe Wifi HD 3870 2x2 GB G.Skill DDR2-800 
Hard DriveOptical DriveOSMonitor
2x250 GB Seagate RAID 0 + 320 GB Seagate Samsung SATA DVD Windows XP Pro/Vista Ultimate 64 bit Viewsonic VA2012wb 
KeyboardPowerCaseMouse
Saitek Eclipse Corsair HX620 Lian Li V2000b Logitech G7 
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post #3 of 3
Do what Taeric, suggested, ive seen many problems like this solved from little overlooked things. Could be a grounding issue, but seeing as how it worked with the 3.2 p4 probably not. Also i checked the cpu support list for your motherboard and the 3.4 prescott is supported so you shouldnt have a problem there. If u get the 3.2 p4 working again and attempt the 3.4 and it justs gives u no post, you might have a dud cpu
cour tew duo ftw!
(13 items)
 
  
CPUMotherboardGraphicsRAM
e4300 @ 3.1ghz 1.35v GA-P35-DS3R Sapphire HD2900pro 512mb 2x1gb Micron ddr2 667 @ 690 4-3-3-12 2T 
Hard DriveOptical DriveOSMonitor
80GB Hitachi Deskstar HP Lightscribe DVD-RW +/- XP LG 19" Widescreen 5ms 
KeyboardPowerCaseMouse
Microsoft Digital Media Pro OCZ StealthXStream 600w idk Dell mouse ftw 
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cour tew duo ftw!
(13 items)
 
  
CPUMotherboardGraphicsRAM
e4300 @ 3.1ghz 1.35v GA-P35-DS3R Sapphire HD2900pro 512mb 2x1gb Micron ddr2 667 @ 690 4-3-3-12 2T 
Hard DriveOptical DriveOSMonitor
80GB Hitachi Deskstar HP Lightscribe DVD-RW +/- XP LG 19" Widescreen 5ms 
KeyboardPowerCaseMouse
Microsoft Digital Media Pro OCZ StealthXStream 600w idk Dell mouse ftw 
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