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Dell Inspiron 15 3000 Running Extremely Slow

This laptop is frustrating the <Profanity deleted. Read the Forum Code of Conduct policy which you agreed to when joining. DELL-Admin> out of me, it isn't even 5 months old I paid $1200 for this which I think is a pretty expensive price for a laptop that runs slower than the one I was replacing (8yr old Toshiba Satellite).

This morning it took exactly 9 minutes and 48 seconds from when I pressed the power button to when I was able top open up "This PC". I did some research and watched the "How to Speed Up Your Computer" video from Dell Tech Support on youtube but everything they said to select in power option's like sleep, fast start up etc. was already selected on my laptop.

At this point I was ready to drive a sledge hammer through it but luckily I seen that there is a Support Assist App I can run to solve any issues so I thought "you beauty this will fix everything" well not quite, I opened the Supports Assist App and hit run all it soon scanned for Drivers and Downloads and said there is an update available then it scanned the hardware which was completed so it moved on to "Preparing for clean files" which it has been sitting on 0% for about 8 hours.

I have had a virus protection (McAfee recommended by Dell) since day one so I doubt its a virus, I'm running out of patience and alcohol can somebody please point me in the right direction. 

Solution (1)

Accepted Solutions

I found something that worked for me. Been stuck with this laptop for 2 years (but never used it as it was a personal laptop)

* Shut down laptop
* During restart tap F2
* In Bios setup -> Untick Intel Step Speed option (can't remember which category it shown under but I think it was performance)
* Exit
* Machine will restart and work fine after that like we expect it to. Note: When I was researching, this fix had a disclaimer, it may affect battery life as this option is ticked by default to preserve battery. However, it was a no brainer for me to at least use the laptop than save battery.

Hope this helps.


You may also use the "Get Help Now" option at the bottom right to chat with a Dell technician right away.



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Replies (73)


For my notes, click my username and send me the pc service tag number via private message.

What is the specific Inspiron 3000 system do you have? Run the ePSA Diags on the system to see if any hardware issues are shown.

Launching the ePSA Diagnostics
1.Tap F12 key repeatedly during system startup (at the Dell logo screen) until the BIOS Boot Menu appears on the screen.
2.On the Boot Menu screen, select Diagnostics option, and then press Enter.

Omg just bought this machine yesterday. 9 minutes to boot up! Ran diagnostics. No issues. What the  <Profanity deleted. Read the Forum Code of Conduct policy which you agreed to when joining. DELL-Admin> did I get myself into!

I would NEVER buy a Dell laptop again.  The first one, straight out of the box before anything loaded, only ran at 100% disk.  Got 2 hours of help on the phone but the helpful person couldn't solve the problem, so advised a replacement.  It was replaced and the current one was OK for a while but now runs almost all the time at 100% disk.  In this house an older, cheaper laptop with i3 chip never has this problem.  Why should I have to upgrade to a SSD hard drive to get a product that works?  It's out of warranty to no comeback.  Dell you need to sort this problem out.

Jess, Dell Inspiron 15 3000 is a pathetic laptop, I am soo frustrated it slow. Everytime i open a perticular file or a brouser it take ages to open. Do you have any solution and please dont say run diagnostics as have already done that not the solution.  

even i am also facing same issue this laptop is very slow...i never expected this much slow from this laptop , do we need to upgrade the RAM, i think having 4gb other laptops are doing fine....i am correct..


Yes u r right just bought it 4 months ago 

i added additional 16 GB but the laptop is still slow. Any idea if I add  SDD ,whether the speed will increase?

I’m dubious though a novice.  Haven’t done SDD but nothing I have done (read all solutions on this topic) worked, but failed materially if not miserably. If I were to invest any more time and money (and I’m not) I would replace HD with SSD, partition hard drive, replace the wireless card, pray to the computer Gods, let everyone here know if it worked and let Dell know:   This Dell Computer and lack of Dell solutions really is not being nice to those who have supported the brand in many purchaser’s experiences and opinions.  

I too had sluggish and slow problems with my Dell Inspiron 15 3000 so I did 3 things which has made the laptop run much faster:

Upgraded RAM to 16GB

Installed a SSD (Samsung) as my original HD failed.

Because of the failed HD, I had to reload Windows 10 from the microsoft website - which provided me a clean version of Win10 - minus the McAfee anti-virus - which may possibly create conflicts and slow the computer. I am now using Avira anti-virus now along with defender.


Now this laptop runs brilliantly, starts up quickly, and multi-tasks like it's suppose to. I have no idea which of the 3 has made the biggest difference. Probably the combination of all 3. So worth upgrading RAM (Au$60), SSD (Au$90) and a clean version of Win10 (Free). All 3 do take time but definitely worth it.


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