I have a startup problem with my machine from power on.
Most times when powered on from a 'mains power off' it fails start - to even get to the Geeforce splash screen.
Occasionally (say one out of 40 attempts) it will start properly and fully boot without any hitches.
At this point it will run normally (for hours) and I can use repeatedly use 'restart' and it boots properly.
If I fully shut down the machine the startup problem returns.
My assumption is that there is a physical difference between a startup from 'power on' and a soft restart using the restart option, this blocks me getting to even the first splash screen.
First indication of a problem was a complete freeze of the screen about a week ago.
Following the freeze the symptoms below appeared:
Fails to get to first GeeForce screen (ie 6600, 128 MB RAM) - monitor not even activated
LED lights: power LED and drive LED on, may remain on or both go out after about 30 seconds. CPU Fan remains on.
Hold in power button to swtich off.
Repeating power on many times (at least 20) and it will eventually start normally.
Occasionally will start normally, first time, from a power off state.
Device manager shows all devices working proprely.
Reseat all plugs and sockets
Remove all plugs for external hardware - selectively replug in, including positions for SATA leads
Remove RAM, selectively replace, including different sockets. Run Memtest86.
Uninstall graphics card, reinstalled (eventually!) when it was able to restart.
re-loaded default BIOS settings
using PEG display
All temperatures are normal.
Drive is healthy, checkdsk returns no errors.
When up and running it is fully reliable
Scrapping the machine is not a financial option for me - so could you suggest what I do next please?
2.20 gigahertz AMD Athlon 64
128 kilobyte primary memory cache
512 kilobyte secondary memory cache
Drives: 320.07 Gigabytes Usable Hard Drive Capacity
108.50 Gigabytes Hard Drive Free Space
TOSHIBA CD/DVDW SDR5372V [CD-ROM drive]
TOSHIBA DVD-ROM SD-M1912 [CD-ROM drive]
ST3320620NS [Hard drive] (320.07 GB) -- drive 0, s/n 5QF7P0CL, rev 3.AEK, SMART Status: Healthy
1024 Megabytes Usable Installed Memory
Slot 'A0' has 1024 MB
Slot 'A1' has 1024 MB
Slot 'A2' is Empty
Slot 'A3' is Empty
NVIDIA GeForce 6600 [Display adapter]
Edited by westwoodside, 15 March 2011 - 03:18 AM.