Now my dell inspiron 530 is turning orange and not working like blow fans low the stop

On some earlier Dell desktop models, a blinking amber light indicates the computer is receiving power, but a device might be faulty or incorrectly installed.  Since it happened right after you cleaned the RAM, you may want to check and reseat the memory modules again as it could be the cause of the issue.

Another indication was the difficulty you had with the modules installation.  The design of the DIMM slot and the memory module are foolproof, there is only one position will fit in.  Verifying that the knot of the memory module is lining up with the grove key in the DIMM slot before pressing it down and a fully inserted module should allow the RAM locks on both sides "clicked" in place.

Since this is an old system, you may want to replace the CMOS coin cell with a new CR 2032 battery.  Refer to your system service manual for proper instruction and taking safety precaution to prevent damage to motherboard.

@Chino de Oro​ I the power supply failed I think I got the orange light of death and I need a power supply that best for the dell inspiron 530 with a floppy disks thing because I got the xps version of it

If you are certain, your Inspiron 530 will take a standard ATX power supply.  Get a PSU with 140 mm depth and between 300w - 500w of power.  Purchase from seller whom offers easy return.

@Chino de Oro​ but can I do both right?

And sorry for all this questions I am new to this things

Yes, can do both.

@Chino de Oro​  thank you so want power supply should I used want batteries do I need?

@Chino de Oro​ can you show me how do you put it in right the ram because I have little bit trouble I want to make it that in is not the problem to I am so confused 

@Everest raccoon​ , click on the service manual link provided on earlier post.  There are several variant of 530 motherboard and chassis.  Follow the instructions for your specific system to replace the CR2032 coin cell battery first.  Battery life is about 5-7 years with AC outlet always plugged in.  Although it's a cheaply cost item, a depleted battery can cause many system issues, including unbootable.

After the coin cell replacement and memory securely installed, run test again.  If the issue is persisted and the system can not boot, then you replace the power supply.

However, the symptom you described of the fan running slow then stopped, it could be contributed by a faulty motherboard with bad CAP (capacitor)  

@Chino de Oro​ the what should I do if don't work? Buy a new motherboard?

Re:  how to install memory module into your system.

You can review the process with visual guide from this tutorial.

@Chino de Oro​ thank you hope it work and not the motherboard because the fan are move then stopping 

Re: what should I do if don't work? Buy a new motherboard?

Because of the system age (probably 15 years), if you can not fix it with a minimal cost, consider to save your investment for a new(er) system that has plenty more life left in it.  

Sometimes, we have to accept and let go of thing that already served its useful life.

@Chino de Oro​ thank you if does work I will let it going because it work very hard for it time

@Chino de Oro​ it not the ram it has the be power supply or battery