\*\*ASUS TUF A15 (FA506IC) – Battery Not Detected, SSD Issues, Strange Boot Behavior After Thermal Paste Replacement\*\*

Hi everyone,

I'm trying to diagnose a strange hardware issue with my ASUS TUF Gaming A15 (FA506IC), and I'd appreciate any advice from people who have dealt with similar problems.

\# Background

A few weeks ago, I opened the laptop myself to replace the thermal paste. After reassembling it, I started facing multiple issues that weren't present before.

At that time:

\* The battery stopped being detected by Windows.

\* The laptop could still power on without the charger even though Windows wasn't detecting the battery.

\* Both cooling fans stopped working completely after reassembly.

I then took the laptop to a local repair shop. The technician got both fans working again, but I suspect he may have bypassed or directly powered them because they now behave differently than before.

\# Current Symptoms

\* Laptop often fails to boot on the first attempt.

\* Sometimes it requires 2–3 restart attempts before booting successfully.

\* Fans run at very high speed ( all the time ).

\* Keyboard RGB lights turn on normally.

\* SSD detection has been inconsistent in the past.

\* Windows still does not detect any battery.

\# Battery Diagnostics

Running:

wmic path win32\_battery get name,batterystatus



returns:

No Instance(s) Available.



Windows Battery Report shows:

No batteries are currently installed



\# Additional Concern

Initially, even when Windows couldn't detect the battery, the laptop could still turn on without the charger connected.

Now it won't power on at all unless the charger is plugged in.

\# What I'm Trying to Figure Out

Could this be:

\* A loose or damaged battery connector?

\* A damaged battery cable?

\* A failed battery pack?

\* Embedded Controller (EC) issue?

\* Motherboard power-management circuit damage?

\* Damage caused during the thermal paste replacement process?

I've attached a video showing the abnormal boot behavior.

Based on these symptoms, what would you check first? Does this sound more like a battery-related issue or a motherboard-level fault?

Any help is appreciated. Thanks!

ASUS TUF A15: Laptop only boots after multiple attempts. Motherboard issue? battery issue? or something else ?