We have clients looking along the same lines.

And for about the same money, you can purchase a more powerful model

HP Business Desktop ProDesk 600 G3 SFF Computer - Intel Core i5-6500 3.2GHz / 16GB RAM / 512GB SSD/Windows 10 Professional (Renewed)

Well some of our clients, lean more towards this Dell model

Dell Optiplex 7040 Business SFF Computer Small Tower PC (Intel Core i5-6500, 16GB Ram, 256GB SSD, DVD-RW, WiFi) Win 10 Pro (Renewed)

To perform properly with Illustrator, it will need a dedicated graphics card

AMD Radeon RX 550 4GB GDDR5 PCIe DP 2 x Mini DP Low Profile Graphics Card R9J9P

This card will work with both models. Although it is suggested to get quality cables, depending on the monitor or television you're connecting it to.

Silkland DisplayPort 2.1 Cable [16K@60Hz, 10K@60Hz, 8K@120Hz, 4K@240Hz 165Hz 144Hz] 80Gbps HDR, HDCP DSC 1.2a, 6FT

ULT-WIIQ 8K DisplayPort 1.4 to HDMI 2.1 Cable [8K, 4K@120Hz/144Hz, 2K@240Hz] Dynamic HDR, Dolby Vision, HDCP 2.3, DSC 1.2a, 6.6FT

Although not definitely required, most people run in Adobe eventually upgrade to 32GB

Timetec 32GB KIT(2x16GB) DDR4 2133MHz PC4-17000 Non-ECC Unbuffered 1.2V CL15 2Rx8 Dual Rank 288 Pin UDIMM Desktop PC Computer Memory RAM Module Upgrade (32GB KIT(2x16GB))

But you can basically be done at any point.

Hope this information helps

MaxProAndU Team

You've proceeded properly so far.

Here are a few things, based on your post, that we found in dealing with our clients.

First, verify voltage of your replacement CMOS battery. We seriously do not believe this is the issue. We've just learned not to ASS-U-ME in these cases.

Second, disconnect the power button wires from the motherboard, so we can rule out an intermittent power button. You would be a surprised how many headaches it gives people. Simply start it with a "pin jump", and see if the problem is gone.

The rest of your prognosis makes our team question the earlier PSU replacements. Without knowing the prior PSU history, it is highly possible that the 3.3 volt rail in the replacement PSU is faulty.

If this is the identical issue that recreated the PSU replacement originally, something's compromising the motherboard or the motherboard itself is defective in some form. The number one source of compromise is the GPU, followed by a monitor. Both have access to the 3.3 volt rail. Although rare, a poorly constructed DisplayPort or HDMI cable can be to blame.

The best test here initially, is to use a new DisplayPort cable, and a different monitor. Even if you have to connect it to a television.

You can also try a tool like this one our clients keep on hand

Comidox 20/24 Pin LCD Computer PC Power Supply Tester for ATX BTX ITX TFX SATA with Buzzer Automatic Alarm

As it does reduce the number of headaches when it comes to PSUs, but isn't the best on the 3.3 volt rail due to the inability to create a load. Still, it's handy to have

Hope this information is helpful

MaxProAndU Team