Have you done a "hard" reboot? When my Compaq Pressario 4910 first came up with "operating system not found", I thought it was all over. I tried a hard reboot ( "pull the plug" ) and it booted just fine. After this happened a few more times and I could always do a successfu hard reboot, I stopped panicing. Now I turn off the computer at a power strip every time I use the software shut-down. No more "no operating system found" messages. I also physically turn-off my HP Pavillon 8290, although I have only had "no o.s found" happen a couple of times with that machine. Mary Jane >From: joseph marty <[log in to unmask]> > >My office bought 23 HP's, and all of them failed in the first year. Some >failed several times. These had 700 mhz celeron CPU's with 10 gig drives. >They all sucked, and had to be repaired all the time. Dump 'em and get >something decent, they'll never stop failing. > > >My school purchased some HP Pavilion celeron computers (against my > >recommendation). The warranty on all of them has expired and now, one by > >one, they are quitting. By that, I mean they come up with the "no >operating > >system found" when trying to boot. Did all the fdisk/format routine, but > >the bios will not recognize the drives. Put them in my own computer and > >same thing. Fdisk will not work (message says there are no fixed disks). > I > >put my own hard drive into each of the computers and they worked fine. > > > >I noticed that these computers have no power supply fan nor any other > >cooling, except for the cpu. I'm thinking the hard drives are >overheating > >(classroom is warm too). I've never seen a computer power supply without >a > >fan. Does anyone think it would be a good idea to replace the hard >drives, > >along with a cooling fan installed? > > > >Has anyone seen this problem with HPs? > > > _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com The NOSPIN Group Promotions is now offering Mandrake Linux or Red Hat Linux CD sets along with our NOSPIN Power Linux CD... at a great price!!! http://freepctech.com/goodies/promotions.shtml