Highlighted
Gerard568
1 Nickel

Inspiron 17R SE 7720 won’t boot

Hello, As an introduction, I had trouble installing the intel HD 4000 drivers for my laptop with Windows 10 and Windows 8,1. So, as I was told, I tried updating the bios of my laptop, I couldn’t do this, I was receiving the “can’t read bios from rom” and “command line error” messages when trying to update with the phoenix sct flashforwards utility, so I tried reseating the CMOS battery as this is a possible solution to the BIOS update problem, this just made my problem worse. Now I have the problem of the no boot and no screen at all. First, after reseating the CMOS battery I heard a 5 beeps loop indicating a failure with the CMOS battery, so I extracted the ram’s and get 4 beeps when turning on, indicating RAM failure. When reseating the RAM, no beeps at all, no screen, no fan (if gpu were bad, the fan should still work) and just turns off when pushing power button again. Already tried with just one ram at a time, tried both installing in different sockets. Tried hdmi and vga video out ports. Tried removing CMOS battery and pushing start button for 30 seconds to conpletely drain power. Tried unplugging the cpu, and hard drive and reseating them. I noticed that the power led keeps on while computer is “on”, the same with the keyboard light and the power button light. And that hdd led turns on for a second flashes for another and turns off (this may indicate that motherboard is okay?), the same with the dell quickset buttons. Thank you very much for reading and for any help you could give me.
0 Kudos
5 Replies
ejn63
4 Ruthenium

Re: Inspiron 17R SE 7720 won’t boot

From the description, it's just about 100% certainly a faulty system board.

 

0 Kudos
Gerard568
1 Nickel

Re: Inspiron 17R SE 7720 won’t boot

Thank you for answering.
If the motherboard were fried, shouldn’t the power and hard drive leds on laptop case stay off at all?

The power led turns on and remains like that until I press the power button for second time.
The hard drive led turns on for a second, blinks quickly for another second, and finally turns off slowly like if it were a power failure. As I said, the power led and the keyboard and dell’s quickset backlights stay on until I “turn off” the laptop.

Again, thank you for answering.

0 Kudos
ejn63
4 Ruthenium

Re: Inspiron 17R SE 7720 won’t boot

Not necessarily - there are many possible faults that can lead to a no-boot, and they don't necessarily mean no power is getting to the board at all.

If you've tried a reset (unplug, remove battery and hold the power button 30 sec;  reconnect the adapter and try to boot without the battery) already to no effect, the mainboard is bad.

 

0 Kudos
Gerard568
1 Nickel

Re: Inspiron 17R SE 7720 won’t boot

Thank you again for answering, I got new news, just in case I reseated the processor and tried booting without any other cards or peripherals. And I got two short beeps, indicating RAM not detected. So I guess motherboard is not fried, although When I connected RAM, there were no beeps nor screen image. Thank you for helping.
0 Kudos
ejn63
4 Ruthenium

Re: Inspiron 17R SE 7720 won’t boot

If you have two modules, try one at a time.  If one works in either socket but the other doesn't work in either, the module is bad.

If both modules fail in one socket, the socket is bad.  You can either live with one module or replace the mainboard.

 

If neither module works in either socket, the mainboard is bad.

0 Kudos