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ariano87

1 Message

518

January 6th, 2023 14:00

Vostro 1520: Num Lock LED & Scroll LED flashes continuously, but Caps lock LED is on

My Vostro 1520 laptop has a problem

When I power on, the NUM Lock & Scroll Lock LED is flashing, but Caps Lock LED is On, and the monitor does not turn on

When the laptop battery is connected, the laptop turns on without any problem, but when the battery is removed and the power cable is connected, this problem occurs.

When the laptop is cold and I want to turn it on, the same problem occurs again, but as long as it is warm, it turns on easily.

Even if I use a hair dryer on the area under the keyboard and turn the laptop on and off a few times with the power button, the laptop works.

Please Help

JOcean

9 Legend

 • 

12.6K Posts

January 6th, 2023 20:00

Judging by the age of the system and from the description you gave about heating the unit up, I would bet the HDD is the culprit. It is possible that the HDD is running up to speed slowly when cold or when the battery is not installed supplying a voltage to the battery. Once you get the system to boot with the battery installed run diagnostics, F12 at boot, and watch for any drive errors.

suboi

1 Rookie

 • 

1 Message

May 24th, 2024 03:48

I have a similar problem with my Dell Vostro 1520. NUM Lock and Caps Lock lights up steadily while Scroll Lock (with symbol '9') keeps flashing. After watching several videos on youtube and search on google, I opened it and found that one pin on the processor was bent and couldn't fit in well. I straightened it, cleaned all RAMs and put them back. When powered it on for the first time, it worked but after I shut it down tried powering on it went back same problem. I have changed RAM, HDD, charger... but it never worked again.

Please help ASAP.

Suboi

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