Discussion Starter · #1 ·
I have a hp 520c. Weeks ago while on-line it errored and said it would shut down and did. Re-boot took 45 minutes. Machine ran so slowly it was unbearable. Took it to hp service center. They said hard drive was shot. I replaced the hard drive and attempted to run system recovery disks. Took over 8 hours to install. At finish re-boot was no different. Still down. No system software can find a problem. Switched memory sticks dimm1 & dimm2 to se if maybe 1 was bad. No change. I'm running system recovery again now. What could cause this failure? What am I missing?