Thank you for joining the Intel® Community. I am sorry to hear you are having issues with this matter.
Have you tried with a system restore?
I noticed that this model comes with Windows® 10 installed, did you change it to Windows 7? See here Inspiron 15 Inch 7559 Multi-Media Laptop | Dell India
1) Yes, I've tried a system restore; no improvement
2) Notice this laptop is about 3 years old. After about 9 months of putting up with Windows 10 design flaws, I purchased Windows 7 Pro from Dell, installed, and the PC had been running great UNTIL THESE RECENT BIOS and DRIVER UPDATES!
I would recommend Windows 7 Professional "Microsoft Windows 7 Professional w/SP1 - License - 1 PC - OEM - DVD - 64-bit, LCP - English" to anyone, but not the Dell updates from the last few months. I see some downloads fixing and re-fixing Intel issues on the Dell support page.
Thank you for that information.
Can you please let us know which specific drivers are you referring to? Let us know the driver versions.
I have updated the Inspiron from these:
And in particular:
Dell Inspiron 7559 System BIOSThis package provide the BIOS for Dell Inspiron 7559 System.
Fixes & EnhancementsFixes:
- Updated Intel ME Firmware to address security advisory INTEL-SA-00086 (CVE-2017-5705 & CVE-2017-5708)
- Update to the latest CPU microcode to address CVE-2017-5715.
VersionVersion 1.2.7, 1.2.7
Release date27 Dec 2017
Last Updated09 Jan 2018
Available formatsFile Format:Windows/DOS
File Size:8 MB
Format Description:This file format consists of a BIOS executable file. The Universal (Windows/MS DOS) format can be used to install from any Windows or MS DOS environment.
and also, but of unlikely consequence:
I see the problem now....
So, when will a fix be out? How can I revert meanwhile? The old BIOS download is not solving the problem.
I am happy with the security risk and mad as hell about the performance drop!
Thank you for this information.
In this case since the BIOS is provided by your computer manufacturer my recommendation is to contact them directly for more information. Their support should be able to advise regarding new BIOS updated an if it possible to use a different BIOS version. From my end you will find all the details on this topic here: Side-Channel Analysis Facts and Intel® Products