I have an older AS5315 that has multiple problems:
1. When plugged-in with the AC adapter, the connection is intermittent, at best (have to 'wiggle' the plug gently to get it to connect and even then, it's hard to get the plug to stay in the 'correct' position long enough to power the laptop). Battery light flashes amber (does this by itself mean anything?) along with the main power light (stays steady amber). I'm suspecting a battery/charging circuit issue here. Might have to replace the power receptacle. Takes several days of this (solid amber main power light and flashing amber battery light) for them to show 'green' statuses and if the computer is jarred/moved even slightly, then everything resets to flashing again.
2. Going to have to replace the HDD - ran a diagnostic disc (only way the computer would boot up after I went into the BIOS and changed the boot order to boot from CD) and every sector it scanned (all of them!) showed as bad. Original OS was Windows Vista (disc ordered).
This is a nice laptop and I'd like to continue using it - yes, I know I could easily buy something more up-to-date (currently using a Win 10 machine for this), but I like having several OSs available, especially since I use the BOINC program for SETI@home (can also be used for other projects as well, but I like SETI). I also use it for several of my Amateur Radio programs.