I've been asked to look at a PC (with the K7VM4 motherboard) which wouldn't start up. Numerous attempts failed and I eventually reinstalled Windows after swapping the memory for some known working DIMMS (same spec) from a different PC.. All is then fine at this point. All Windows updates were installed fine etc. However, I swapped the memory back to confirm that it was at fault and the PC either got halfway through startup and restarted or came up with the blank screen everyone else describes. My query is that when I put the known working memory back in, the problem persists until I reinstall Windows again. If this is the case, I can't nail it down to a memory fault can I? Any other suggestions before I replace the M/B?
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I assume you've already tried pressing F8 on startup to get into the start-up options screen (from there you can attempt "Restore System to a previous date."). If you can't get anywhere with the F8 options, try starting up your system from a Windows Install disk. (Unfortunately, few computers come with this. Some have a Restore mode using either a special startup hot key or a set of optical disks, but this usually involves formatting C: and wiping out everything before setting it back to factory original state.) Once you have the Windows Install disk going, watch for the Automatic System Repair option to come up. This is different for each version of Windows, so I can't give you more than that other than to follow the on-screen instructions. Note: virus infections can disrupt the hardware registry and produce the symptoms you have. By now, your backup registry is corrupted (that is why the automatic repair fails). I've found the easiest virus fix for a desktop computer is to remove the hard drive and install it as a second drive in a known-good computer, then have that system scan the problem drive for virus infections and file system corruption. If you have a 2.5" - 3.5" drive adapter and can remove the drive easily, you can also use this tactic on laptop hard drives. You will probably still need to repair the operating system damage.
Changing the CD54/74HCT365. M is rated 25 on quality and MT is 100 and M96 is 2500 and probably cost a little more too. But, what bothers me is that something else could be wrong and driving it to burn up? Asrock k7vm4 Rev. 1.03 16 Ghz and K7VM4 is the BIOS
There seems to be a memory problem on your PC, you might need to replace your memory modules, please check if you have low latency memory since that type of memory needs a voltage adjustment made in the motherboard startup Bios to work correctly.
But first you can try opening windows CONTROL PANEL / SYSTEM look at the ADVANCED tab and click on the SETTINGS button at the STARTUP and RECOVERY section, a new window will pop up and select (NONE) at the WRITE DEBUGGING section in that window. And see if it gets better, if not try deselecting the 3 options above this write debugging section. All this is safe to do, if it works it works, if it doesn't nothing happens.
1. Processor is cold dead.
2. Power Supply has got a problem. Just powering a fan is not a guarantee that it is powering everything normaly. Try a different one as you test agai.
3. I suspect your MoBo is good, but try a different video card also with your new DDR.
4. Do you hear the HDD cranking or whining when you turn on the PC? Keep ear near HDD and listen. It it whine-starts, it's a fair sign.
5. Try a different monitor while you test these.
I did try removing the Hard Disk from the recorder and did a diagnostic and fix-disk using Ontrack software. Ontrack showed no structural and physical defects on the hard disk. I replaced the hard disk in the recorded and guess what! Please wait, please wait, please wait, please wait...................................