What was the issue with Seatools? You can create a bootable USB flash drive using the iso or Memtest. Download and run Rufus on another comptuer. Make sure your flash drive is listed. Select MBR for a partition scheme. Leave everything as checked. Where you see FreeDos select iso image in the dropdown box and browse to the iso of memtest. Press Start. Backup any data on the computer. Attach the flash drive. According to this link you can tap F11 at boot to boot from the USB. If that does not work then make sure USB is the first boot device in BIOS.
I am under the impression this is a hardware issue, especially if the computer cannot boot unless it is powercycled. According to this link you can start diagnostics on the Sony by tapping F10 at boot.
Checkmark the following checkboxes:
List last 10 Event Viewer log
List Installed Programs
List Users, Partitions and Memory size.
Paste the log in your next post.
Publish a Snapshot using Speccy -
To publish a Speccy profile to the Web:
- In Speccy, click File, and then click Publish Snapshot.
- In the Publish Snapshot dialog box, click Yes to enable Speccy to proceed.
- Speccy publishes the profile and displays a second Publish Snapshot. You can open the URL in your default browser, copy it to the clipboard, or close the dialog box.
- Copy the URL in your next post.