Computer repeatedly crashes since 26th of september

[Omen76]

Hi! For some reason i cannot add Product name or operating system information so here it is:

Windows 10

OMEN by HP Desktop PC - 880-040no

Now my computer repeatedly crashes sometimes it wont start, just the lights that turn on and you can hear it running, but nothing else, sometimes it reboots itself over and over untill i shut it off manually, and sometimes it starts up for about 3-5 minutes before the computer freezes and I cant do anything but shut it off again. Ive tried the following 

1. Using the disc cleaner

2. System reset

3. Upgrading drivers

4. Disabling antivirus Software etc

5. Disable auto start programs

6. Memory diagnostics

There seems to be some hardware malfunction, i get the following message from the memory diagnostics:  Hardware error detected. Contact computer manufacturer for troubleshooting and repairs...

[Kuroi_Kenshi · Accepted solution]

Hi @Omen76,

Welcome to the HP Support Community!

Thanks for reaching out!

We're thrilled to have the opportunity to assist you and provide a solution.

I understand your OMEN by HP 880-040no desktop has been repeatedly crashing and sometimes won’t even boot properly. Since you’ve already tried software-level fixes (driver updates, system reset, memory diagnostics, disabling antivirus/auto-start programs) and the Windows Memory Diagnostic reports a hardware error, this points strongly to a hardware problem. Let’s go step by step:

1. Power & External Peripherals Check

Disconnect all external devices (USB drives, printers, headphones, monitors except main display).

Try booting the PC with only keyboard, mouse, and monitor connected.

A faulty peripheral can occasionally prevent boot or cause freezes.

2. Reseat Internal Components

If you’re comfortable opening the PC case:

Power off and unplug the system.

Reseat RAM modules:

Remove each stick and reinstall in the correct slots.

If you have multiple RAM sticks, try booting with one stick at a time to isolate a faulty module.

Check GPU, cables, and storage drives:

Ensure the graphics card is seated properly.

Check SATA/PCIe cables and power connectors.

Memory errors are often caused by faulty RAM or motherboard DIMM slots.

3. Test RAM Modules Individually

Since the memory diagnostic flagged a hardware error, one or more RAM sticks may be defective.

If the system boots with only one stick, test each stick individually in different slots.

Replace any stick that triggers the error.

4. Check Storage Drives

A failing HDD or SSD can also cause freezes and crashes.

Listen for unusual noises from HDDs.

If possible, boot from a Windows installation USB and run CHKDSK on each drive.

5. Check for Overheating

Open the case and ensure all fans are spinning (CPU, GPU, PSU, case fans).

Clean out dust from heatsinks and fans.

Overheating can cause sudden shutdowns or repeated reboots.

6. Test with Minimal Hardware 

Disconnect all drives except one with Windows installed.

Remove extra PCIe cards, USB devices, and RAM sticks except one.

Boot and see if the system stabilizes.

This can help isolate the faulty component.

I hope this helps.

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Best regards,