Member Avatar for deafy2009

My laptop..any time rate from ...maybe 30 mins to 3 hours..or so. random time it'll freeze..for like 10 seconds..then it goes black..all black..programs still running..but my screen is black. I can't do nothing but only press power button off then back on..then it keep doing it over and over again. how can i solve this problem? Please respond this thread ASAP.

Your thoughts will be appreciated. Thanks!

TOSHIBA
Satellite L455D
3.1 Windows Experience Index
AMD Sempron(tm) SI-42 2.10 GHz
2.00GB (1.75 usable)
32-bit Operating System
No Pen or touch Input.

and this laptop is less than a year old..and was sent to FEDEX/UPS for repair 3 times..because its doing the same thing..and they didn't fix anything at all.

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  • Latest Post Latest Post by oalee

Dani AI

Generated

The symptoms described by — system still running while the laptop screen suddenly goes black at unpredictable intervals — point to a problem in the display subsystem, graphics driver/firmware, or a power/thermal-triggered recovery rather than an application crash. rightly flagged temperature as one possible factor; the troubleshooting below fills gaps not yet covered and gives concrete checks to separate software from hardware causes.

  1. Quick live checks to classify the failure
  • Observe keyboard LEDs (Caps/Num Lock) or try Ctrl+Alt+Del when the screen is black; if LEDs/toggles still respond the OS is alive.
  • Attach an external monitor (VGA/HDMI) and cycle displays with Windows+P or the laptop display key. If the external shows output while the internal remains black, the issue is likely the LCD panel, inverter or display cable. If both are black, suspect the GPU/driver or motherboard.
  1. Collect evidence from the system
  • Run Reliability Monitor (Control Panel → Action Center → Maintenance → View reliability history) and Event Viewer (Start → type eventvwr) and look for errors around the blackout times (display/driver, kernel-power, disk errors). Record exact timestamps and any repeated error codes.
  • Boot Safe Mode (F8) or perform a Clean Boot (msconfig) to see if the problem persists — a disappearance in Safe Mode points toward drivers or third‑party software.
  1. Targeted fixes and checks
  • Test with a known-good graphics driver (either a clean reinstall or a rollback). If browser/Flash games trigger the problem, temporarily disable plugin/browser hardware acceleration.
  • Run memory and disk checks (Memtest86+, chkdsk) and capture temperature logs with a hardware monitor tool while reproducing the issue.
  • Check for BIOS and chipset updates from Toshiba before flashing; follow vendor instructions exactly and back up data first.

If diagnostics point to a hardware fault (internal panel OK vs external, repeated thermal shutdowns, or persistent driver failures after clean installs), escalate with Toshiba support and provide the collected logs and timestamps — repeated repair history strengthens the case for a board or panel replacement under warranty.

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Member Avatar for oalee

One main reason for this to happen is when your laptop overheats. It seems to still be running but is actually in the process of hibernating. When you turn the computer back on, do you get a notification that it was because of overheating? I have a similar experience on my laptop and is usually because of overheating. check the vents of they are clear of dust and dirt.

Member Avatar for jingda

Hi oalee, you have revive a zombie thread for a third time

Member Avatar for oalee

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