Windows lags once a week or so

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  1. Posts : 7
    10
    Thread Starter
       #11

    [QUOTE=Macboatmaster;1997141]
    Edit2: Sometimes this lag has happened after turning up the brightness using the keyboard hotkeys.[/QUOTE
    I do not know if personal circumstances have prevented you replying before, but there is no chance of fixing it or even diagnosing the problem, if you cannot reply to suggestions and then follow the next suggested action, on some manner of frequency other than 10 April to 17 August.

    If you wish to try further it will be my pleasure to try and assist
    Im very sorry for the really late reply, but I try to minimize the time I spent on my laptop as I have a 8 and 30 min job in front of the pc. Now im on holidays and I spent a little bit more time on the laptop. And the problem rarely happened. Now I must stay on battery to reduce the lag.

    I think its not a software related problem becouse the laptop works fine on battery. I guess the problem might be the charger.
    Its been plugged in for few hours but it just says "Plugged in" it dosen't say "Plugged in and charging".


    Ran an on-board diagnostic test and got the following results
    Code:
    "Error message: Battery - The battery cannot provide sufficient power"
    and
    Code:
    "The AC power adapter wattage cannot be determined.The battery may not charge.
    The system will adjust the performance to match the power available."
    I removed the plug from the laptop to check to voltage at first. The voltage was fine 19.5V. Probably not enough power due to bad capacitors. The ac adapter is 90w and original, but the power connector which goes to the laptop is replaced.

    I plugged the laptop back and now its charging and running at full speed. Is there anything I can do other than replacing the charger?


    Thanks
      My Computer

  2. Macboatmaster's Avatar
    Posts : 877
    10, 8.1 and 7 all Professional versions, and Linux Mint
       #12

    I plugged the laptop back and now its charging and running at full speed. Is there anything I can do other than replacing the charger?
    The fact the charger measures 19.5v when not under load, means very little.
    When the demand of charging is made and the charger should deliver a given voltage at so many watts/amps
    It could well be that it is not delivering that power and the voltage tested with no load means very little

    What is the output voltage on the charger shown as : For example 15v at 5amp = 75 watts

    If you leave a charger unused it MAY when reconnected perform OK until the components heat up and it may then fail to deliver the power (current) required

    Alternatively it may be the connecting lead of course, or indeed the charging circuit in the laptop/connections

    There is without further testing of output of charger under load, no simple answer, but the assured cheapest way is to borrow from wherever you can source it a suitable charger, or if you have access to a local computer shop, not one of the giant multiples, they may have testing equipment.
      My Computer


  3. Posts : 7
    10
    Thread Starter
       #13

    Last update for this thread.

    Finally got a replacement cable for the charger from Aliexpress for about 1.5$. (1.2M 7.4 x 5.0 mm)

    Middle pin is the one that charges the battery. If there is no voltage in the middle pin, like in my case, then replace the charger cable. Blue wire= middle pin has a intermittent contact, thats why I got the lags once in a while.

    Thank you for the support! Cheers!
      My Computer

  4. Macboatmaster's Avatar
    Posts : 877
    10, 8.1 and 7 all Professional versions, and Linux Mint
       #14

    Cheers pleased you got it sorted
    as I said
    Alternatively it may be the connecting lead of course
    but you did well to establish the the pinout
    Congrats
      My Computer

  5. Bree's Avatar
    Posts : 18,834
    10 Home x64 (20H2) (10 Pro on 2nd pc)
       #15

    lolville said:
    Last update for this thread.

    Finally got a replacement cable for the charger from Aliexpress for about 1.5$. (1.2M 7.4 x 5.0 mm)
    Middle pin is the one that charges the battery....

    Not quite, it's a bit more complicated than that. For a Dell charger the center pin is actually a data connection using the 1-wire protocol. If this pin is not making contact, or its wire is broken somewhere in the lead, then the Dell laptop cannot confirm the capabilities of the charger and will refuse to charge from it.

    There are two other connections in the Dell plug for the power, an outer and an inner sleeve. If these are OK then an unrecognised charger will still power the laptop, but not charge it.

    Genuine Dell laptop power supplies use the 1-Wire protocol to send data via the third wire to the laptop computer about power, current and voltage ratings. The laptop will then refuse charging if the adapter does not meet requirements.[3]
    1-Wire - Wikipedia
      My Computers


  6. Posts : 1,259
    Windows 10 Home 2004 19041.804
       #16

    Bree said:
    Not quite, it's a bit more complicated than that. For a Dell charger the center pin is actually a data connection using the 1-wire protocol. If this pin is not making contact, or its wire is broken somewhere in the lead, then the Dell laptop cannot confirm the capabilities of the charger and will refuse to charge from it.

    There are two other connections in the Dell plug for the power, an outer and an inner sleeve. If these are OK then an unrecognised charger will still power the laptop, but not charge it.

    1-Wire - Wikipedia

    Well, that's a most fascinating fact and likely explains much of my charging grief on an old Dell Studio laptop. Now I'm interested to investigate further.

    Have you ever managed to crack open a Dell charger brick leaving few enough pieces to allow re-assembly?
      My Computer

  7. Bree's Avatar
    Posts : 18,834
    10 Home x64 (20H2) (10 Pro on 2nd pc)
       #17

    W10 Tweaker said:
    Well, that's a most fascinating fact and likely explains much of my charging grief on an old Dell Studio laptop. Now I'm interested to investigate further.

    Have you ever managed to crack open a Dell charger brick leaving few enough pieces to allow re-assembly?
    No, fortunately I've not needed to.

    I found out about all this when I bought a 2nd hand Dell Lattitude and it came with an HP charger rather than a Dell. HP use the same three wire plug and voltages as Dell, but the center pin ID data was not recognised by the Dell. Googling discovered what the center pin was for, and a call to the seller got a Dell charger posted to me.

    All my genuine Dell chargers are fully functional. But there is a 'How To' guide here:

    Hacking Dell Laptop Charger Identification | Hackaday
      My Computers


  8. Posts : 1,259
    Windows 10 Home 2004 19041.804
       #18

    Bree said:
    No, fortunately I've not needed to. All my genuine Dell chargers are fully functional. But there is a 'How To' guide here:

    Hacking Dell Laptop Charger Identification | Hackaday

    Thanks Bree, that solution would be much preferred over smashing the plastic brick open. I'll have a read, investigate this further and report back if I cobble a fix.


    The above solution would prove to be a considerable effort for most unless you're familiar with coding, have lots of spare time, and access to an electronics facility with suitable test gear. :-(
    Given that I retired 6 years ago, a bit too much effort for my interest.

    However, thanks for posting that link. It rejuvenated my interest in exploring this annoyance once again and I have finally identified the root cause for my Studio laptop not charging.

    I can't believe I missed this but... I'd say the AC adapter jack on my laptop requires an easy soldering fix. Until I find time to crack open that laptop again, I found a temporary solution. An old mouse crammed under the charger plug helps with that intermittent data line connection. Likely a cold solder joint inside where the jack is soldered onto the motherboard.

    The blue LED on the charger plug always stayed on but the white LED on the laptop would always extinguish shortly after plugging in the adapter. By carefully wedging an old mouse under the plug, the white LED stays illuminated until my audible charging alarm sounds at 96%.

    It's always a great day when you fix an old annoyance or identify and band-aid.
    Thanks again.
    Last edited by W10 Tweaker; 05 Oct 2020 at 15:18.
      My Computer


 
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