So when you attempt to boot the laptop, you're met with the same plain black screen, and a flashing grey underscore - after which you may get a glimpse of the normal Toshiba boot screen.
This is only a glimpse, however, and the laptop quickly flicks back to the black screen then to the boot menu.
There had been a screen about boot failure but not in recent attempt at reboots. It's just gone straight to the boot menu.
Before this happened, my laptop was functioning relatively normally, barring that it was freezing up - the reason I switched it off in the first place. When I tried to reboot, all of this happened.
The HDD/SSD is suddenly missing too? (where there had been something there before and I'd tried to boot it from that and the CD/DVD (TSSTcorp CDDVDW TS-L633C) is still there though I can't get the laptop to boot from this either.
Basically, I'm stumped. My technical abilities don't really extend beyond basic system restores and I've no idea what's happening.
Not too long after posting this, laptop began to boot, though still isn't working.
Now stuck in a loop.
Two option given are "Start windows normally" and, the suggested option "Launch Windows repair"
However, this leads to it being effectively stuck on a plain screen, with seemingly little "repair" activity going on. Starting windows normally makes the laptop crash, and sends it back to the original menu.
I've attempted to restart this is safe mode, however, this lead to the laptop briefly flashing the blue screen of death, then reverting back to the launch menu.
sure ,,, like i see alot people have same problem with SATA drivers in booting to reinstla system...so
go to BIOS (F2) ,,, and find SATA setings,,, if i remember good its in ADVANCED area,, SATA hdd change to Compatibile mode,,, and uwill be able to instal system...in my case i was try few times instal system cus i tihnk my DVD player is littte demaged.,,,, but if uchange it this will fix problem 4 u
So when you attempt to boot the laptop, you're met with the same plain black screen, and a flashing grey underscore - after which you may get a glimpse of the normal Toshiba boot screen. This is only a glimpse, however, and the laptop quickly flicks back to the black screen then to the boot menu.
This is a typical sign of HDD malfunction. I think you will need to check the HDD if possible.
You can use a tool called Drive Fitness Test. This can help you to detect some errors on the HDD.
If this would not be possible because the HDD would not be recognized, then you should replace the HDD
Some BIOS contains a SATA option: AHCI and compatible mode.
Using AHCI you have to install the SATA driver (intel storage manager).
Without the installation of SATA driver, the OS will not see the HDD.
But if you switch to compatible mode, the SATA drivers would not be necessary but in such case the HDD would run with lower performance.