I've changed the CMOS battery of my Thinkcentre like I did many times on my assmbled pc.
after this my computer stops booting and says no os found.
then I set the bios to default but again noting happened.
I enabled the AHCI settng on bios then it comes to booting opt(safe mode.last known good con netc)
after selecting all of them my machine restarted.
then I disabled the AHCI after that machine started normally but when i started my machine the next day the problem comes again.
when I rechecked tha bios I found the HDD on the bottom of the boot sequence I tried to move it to the 1st opt but nothing happened whereas when I tried the last method I told it works bt when I restarted my pc the same problem occurred.
Lenovo Thinkcentre Problem?
Guest
When you're in the BIOS of the ThinkCentre's, you have use the 'U' and 'D' keys to move the HDD positions up and down on the list. After the change, hit F10 save and exit.
Also,
If that doesn't fix the not finding OS problem, here is another long-shot solution fix. Do you have an accessory that uses USB slots or Memory card/stick ports on it? IE a Printer/Scanner than has a direct from memory card print feature? It might have gone bad and is causing an intermitant confusion with the bios startup sequence. A quick test to see if this is the issue is to unplug the device or USB cord and try booting again. Does it resolve the problem? If yes. Then you've narrowed your search.
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